Pairing Starcki Damselfish

[FullSend]

I purchased two starcki damselfish, chrysiptera starcki, from DD a couple of months ago, but they fought consistently. As a result, I ended up separating them. I would still like to pair either of my current fish. I'd like to increase my odds of finding a potential mate past the random 50/50. I've been studying the pictures of several fish that have appeared on DD over the past few months, but have made little progress on any concrete differences. I then detoured to the Orangetail Blue Damselfish, Chrysiptera Cyanea, hoping to make observations to apply to the starcki damselfish.

If you are interested here are my observations from two images of Chrysiptera Cyanea.

Spoiler: Chrysiptera Cyanea

Orangetailed damselfish, chrysiptera cyanea, are in the same genus but exhibit sexual dimorphism. In this case, at a minimum, the males have an orange tail and the females do not. Clearly there are some immediate differences between the two species of fish, forked tails for example, but I'm hoping there is at least some overlap.

Male Chrysiptera Cyanea "Orangetail Blue Damselfish"

Observations from the male:

Dorsal fin comes to a point​

Anal fin comes to a point​

Anal fin appears much larger​

The first rays on the pelvic fins are longer than the rest of the fin​

This fish appears to be more mature than the female below​

Female Chrysiptera Cyanea "Blue Damselfish"

Observations from the female:

Dorsal fin is still longer than the fish body but appears rounded​

Anal fin is shorter, but possibly does come to a point​

Anal fin appears smaller​

The first ray on pelvic fins are not longer than the rest of the fin​

This fish appears younger and underweight making observations about body shape difficult​

This is the current starcki they have available:

Based on observations from Chrysiptera Cyanea this fish seems like a male to me.

Dorsal fin comes to a point​

Anal fin comes to a point​

The first ray on the pelvic fins appears slightly longer​

Any ideas?

Edit: changed how the last image is cropped

 

[ThRoewer]

I found that the ones at DD are too large in general.

 

[FullSend]

I found that the ones at DD are too large in general.

How do you mean?

 

[cd459]

I think your best bet would be to get a group of 5+ and see how it goes. You'll need an appropriately sized tank also

 

[ThRoewer]

How do you mean?

Try to get some that are below 1", the smaller the better.

 

[FullSend]

Here are 5 fish currently on DD. They range in size from 2" to 2 3/8".

Fish 1: 2 1/8" Melanesian
Dorsal fin comes to a point can't confirm
Anal fin comes to a point
The first ray on the pelvic fins longer
The first ray on the pelvic fins curve forward

Yellow from mouth extends to pelvic fin

Fish 2: 2" Tongan
Purple extends far into rear dorsal fin?
Anal fin comes to a point
Anal fin contains more black?
The first ray on the pelvic fins longer
The first ray on the pelvic fins curve forward
Purple extends far into rear dorsal fin?

Yellow from mouth extends only to gill cover

Fish 3: 2 3/8" Tongan
Dorsal fin comes to a point
Anal fin comes to a point
The first ray on the pelvic fins longer
The first ray on the pelvic fins curve forward

Yellow from mouth extends to pelvic fins

Fish 4: 2" Tongan
Dorsal fin comes to a point can't confirm
Anal fin comes to a point
The first ray on the pelvic fins longer
The first ray on the pelvic fins curve forward

Fish body appears much deeper
Vent appears pointed
Yellow from mouth extends only to gill cover

Fish 5: 2" Tongan
Dorsal fin comes to a point can't confirm
Anal fin comes to a point
The first ray on the pelvic fins longer
The first ray on the pelvic fins curve forward

Fish body appears almost rectangular
Vent appears rounded
Yellow from mouth extends only to gill cover

Notable observations:
Fish 4 and 5 have much deeper bodies than the other fish

The eyes of these fish appear higher than the top of their tails​

Could be how the fish are swimming​

Yellow coloration from the mouth appears to have two outcomes extending to the pelvic fins or only past the gill plate